The larger and smaller subunits in 80 S ribosome are

Options

A. 50 S, 30 S
B. 60 S, 40 S
C. 40 S, 60 S
D. 30 S, 50 S

Answer

To answer the question about the larger and smaller subunits in an 80S ribosome, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Ribosome Structure**: Ribosomes are non-membrane bound organelles composed of two subunits. They are essential for protein synthesis in cells.

2. **Identify the Types of Ribosomes**: Ribosomes can be classified based on their sedimentation coefficients into two main categories: 70S and 80S ribosomes. The "S" stands for Svedberg units, which measure the rate of sedimentation during centrifugation.

3. **Focus on 80S Ribosome**: For the 80S ribosome, we need to identify the sizes of its subunits.

4. **Determine the Subunit Sizes**:
- The larger subunit of the 80S ribosome has a sedimentation coefficient of 60S.
- The smaller subunit of the 80S ribosome has a sedimentation coefficient of 40S.

5. **Conclude the Answer**: Therefore, the larger and smaller subunits of the 80S ribosome are 60S and 40S, respectively.

### Final Answer:
- The larger subunit is **60S** and the smaller subunit is **40S**.

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